Stockman and his U-2 took off from Wiesbaden a little after 6:00 a.m., the pilot and his airplane moving skyward in a dramatic incline. The U-2 rose at a remarkable fifteen thousand feet a minute, so steep a gradient that for airmen on the ground who were unfamiliar with the airplane, it must have looked like Stockman was about to pitch back and stall. Halfway to altitude, Stockman briefly let the fuselage even out, allowing his body fluids and the fluids in the fuel tanks to expand and adjust. Once, a U-2 pilot had ascended too quickly, and his fuel tanks exploded. The pilot was killed. After a few additional minutes of ascent, Stockman arrived at cruising altitude. The sky above him was black and he could see stars. Below him, the Earth curved. It would be an eight-and-a-half-hour journey without a sip of water or a bite of food. In the U-2’s camera bay, Stockman transported a five-hundred-pound Hycon camera fitted with the most advanced photo lenses ever devised in America. To prove how accurate the camera was, Bissell had sent a U-2 from Groom Lake on a flight over President Eisenhower’s Pennsylvania farm. From thirteen and a half miles up, the U-2’s cameras were able to take clear photographs of Eisenhower’s cows as they drank water from troughs.
After several hours, Stockman approached Russia’s submarine city. “I was supposed to turn the cameras on when I reached Leningrad,” Stockman recalls. “I was to fly along photographing the naval installations there as well as a couple of airfields that were all part of what we had been led to believe might hold long-range Soviet bombers.” But there were no long-range bombers to be found. The famous bomber gap, it turned out, was false. What Stockman filmed on the first overflight into Russia provided the CIA with critical facts on an issue that had previously been the subject of contentious debate. Russian weapons expert Herbert Miller wrote a triumphant memo to Eisenhower after the film in Stockman’s camera was interpreted, explaining just how many “new discoveries have come to light.” Stockman’s flight provided the Agency with four hundred thousand square miles of coverage. “Many new airfields previously unknown, industrial complexes of a size heretofore unsuspected were revealed… Fighter aircraft at the five most important bases covered were drawn up in orderly rows as if for formal inspection on parade.” What astonished Miller was just how current the information was. “We know that the guns in the anti-aircraft batteries sighted were in a horizontal position rather than pointed upwards and ‘on the ready.’ We know that some harvests were being brought in, and that the small truck gardens were being worked.” They denoted “real intentions, objectives and qualities of the Soviet Union.” Hervey Stockman explains it this way: “What it portrayed was that as a people they were not all geared up to go to war. They were leading a normal Russian life, so that behind this ‘Iron Curtain’ there wasn’t all this beating of drums and movement of tanks and everything that was envisioned. They were going about their way over there.”
Stockman’s photos made the CIA ecstatic and justified the entire U-2 program, as a flurry of top secret memos dated July 17, 1956, revealed. “For the first time we are really able to say that we have an understanding of what was going on in the Soviet Union, on July 4, 1956,” Miller wrote. But as beneficial as Stockman’s flight was for the CIA, the results proved disastrous for President Eisenhower’s relationship with Nikita Khrushchev. Despite Bissell’s assurances to the contrary, the U-2s were tracked by the Soviets’ air-defense warning systems from the moment they hit the radar screens. Once the film from Stockman’s flight was developed, CIA photo interpreters determined that the Soviets had attempted more than twenty interceptions of Stockman’s mission. “MiG-17 and MiG-19 fighters were photographed desperately trying to reach the U-2, only to have to fall back to an altitude where the air was dense enough for them to restart their flamed-out, oxygen-starved engines,” photo interpreter Dino Brugioni told Air and Space magazine after the U-2 program was declassified, in 1998.
When Khrushchev learned the Americans had betrayed him, he was furious. After the picnic at Gorky Park, Khrushchev had agreed to spend the Fourth of July at Spaso House, the official residence of Ambassador Charles Bohlen, located just down the street from the Kremlin. When Khrushchev learned that while he had been celebrating the American Independence Day with the country’s ambassador, a U-2 had been soaring over Russia, he was humiliated. “The Americans [are] chortling over our impotence,” Khrushchev told his son, Sergei, a twenty-one-year-old aspiring missile designer. But in addition to the personal affront they caused Khrushchev, the U-2 overflights greatly embarrassed the Soviet Union’s military machine. Soviet MiG fighter jets couldn’t get a shot anywhere near Hervey Stockman’s U-2, which flew miles above the MiG performance ceiling, just as Colonel Leghorn had predicted. In 1956, the land-based Soviet surface-to-air missiles could not get a shot up high enough to knock the airplane out of the sky. America’s spy plane had flown over Russia with impunity. And if that fact became known, the Soviet Union would look weak.
Weighing the options—embarrass his own military, embarrass the American president, or say nothing—Khrushchev chose to remain silent, at least as far as the international press was concerned. As a result, the first U-2 overflights were kept secret between the two governments. But they seriously strained already tenuous relations. Eisenhower ordered the CIA to stop all overflights inside the Soviet Union until further notice. Even worse, the president told Richard Bissell that he had “lost enthusiasm” for the CIA’s aerial espionage program.